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01 Record

CVE-2023-34253

Grav vulnerable to Server-side Template Injection (SSTI) via Denylist Bypass

HighPUBLISHEDCNA: GitHub_M
CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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02 Description

Grav vulnerable to Server-side Template Injection (SSTI) via Denylist Bypass

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.07% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 81.3% of scored records. A rank, not a probability.
NVD base score
7.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-06-14 22:00Z3 YR AGO
Last updated
2024-12-18 21:39Z1 YR AGO
Reserved
2023-05-31
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 8.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-184Incomplete List of Disallowed InputsBase
  • CWE-1336Improper Neutralization of Special Elements Used in a Template EngineBase
  • CWE-94Improper Control of Generation of Code ('Code Injection')Base
Data version
5.1
Document digest
f6ed33ddf5f88e3a0bef7a523244f046d02cfedb49d6907725df3e924c10e82e

05 Affected products

VendorProductVersionsPlatforms
getgravgrav< 1.7.42—

06 References